Because so many modern products are made from plastics and other synthetic materials, it may come as a surprise to know that traditional, naturally grown and produced rubber still plays a vital part in manufacturing. Although industrial usage has changed over time, this raw material is still needed for a variety of everyday applications. Rubber extrusion companies today turn out a huge number of custom-designed parts.
Originating in the New World, Hevea Brasiliensis trees are the source of the elastic sap that has proven so valuable. When the industrial age ballooned during the 19th century, a huge demand was created, sparking a Brazilian gold rush for latex. Biological and political realities soon made large-scale jungle farming in the New World impractical, and most modern plantations are now found in southeastern Asia.
Once the special properties inherent in this substance became well known, it quickly grew indispensable, especially to the newborn auto industry. The need for reliable tires and other parts spurred the development of the vulcanization process, which eliminates some less desirable characteristics. Even after the introduction of durable and cheap synthetics during World War II, there was still a huge demand.
Today, synthetic and natural varieties alike are necessary for a smoothly functioning consumer society. In addition to vehicle manufacturing, both types are important in the apparel industry, electronics, and health-care products. In many cases, the raw material is carefully fed into custom designed forms that have been precision-made for a specific role. Rubber extrusion is at the heart of this process.
This process differs somewhat from creating a product via a mold. A filled mold is specifically designed to reproduce one shape only, unlike an extruding machine, which can produce continuous lengths of a specific shape by forcing pressurized raw material through a specially cut die. The metal die itself is a flat, circular plate with a specially shaped opening cut in the middle.
The devices are based on the same principle as an old-fashioned cake decorating paper cone. When a baker squeezes the large end of a cone, the icing is forced out the small end, and precisely mimics the nozzle opening. In a factory, non-vulcanized, semi-soft latex or synthetic material goes into the large side of an extruder, and it is forced out under pressure, while retaining the die opening shape.
As it leaves, the material hardens and expands, retaining the die opening shape. This expansion is allowed for by design engineers, resulting in a finished product that is one continuous ribbon or length, to be measured and precisely cut to order. This method is ideal for making such useful products as weather stripping or door seals. Unlike a mold, the dies can be changed depending on product requirements.
That includes common U-shaped channels and other forms used heavily in the auto manufacturing industry. Extruded latex not only seals out moisture, but is used to dampen external noise, to help eliminate road vibration, and as decorative trim. Extrusion makes it possible for manufacturing companies to mass produce a consistent, identical products that people will benefit from nearly every day.
Originating in the New World, Hevea Brasiliensis trees are the source of the elastic sap that has proven so valuable. When the industrial age ballooned during the 19th century, a huge demand was created, sparking a Brazilian gold rush for latex. Biological and political realities soon made large-scale jungle farming in the New World impractical, and most modern plantations are now found in southeastern Asia.
Once the special properties inherent in this substance became well known, it quickly grew indispensable, especially to the newborn auto industry. The need for reliable tires and other parts spurred the development of the vulcanization process, which eliminates some less desirable characteristics. Even after the introduction of durable and cheap synthetics during World War II, there was still a huge demand.
Today, synthetic and natural varieties alike are necessary for a smoothly functioning consumer society. In addition to vehicle manufacturing, both types are important in the apparel industry, electronics, and health-care products. In many cases, the raw material is carefully fed into custom designed forms that have been precision-made for a specific role. Rubber extrusion is at the heart of this process.
This process differs somewhat from creating a product via a mold. A filled mold is specifically designed to reproduce one shape only, unlike an extruding machine, which can produce continuous lengths of a specific shape by forcing pressurized raw material through a specially cut die. The metal die itself is a flat, circular plate with a specially shaped opening cut in the middle.
The devices are based on the same principle as an old-fashioned cake decorating paper cone. When a baker squeezes the large end of a cone, the icing is forced out the small end, and precisely mimics the nozzle opening. In a factory, non-vulcanized, semi-soft latex or synthetic material goes into the large side of an extruder, and it is forced out under pressure, while retaining the die opening shape.
As it leaves, the material hardens and expands, retaining the die opening shape. This expansion is allowed for by design engineers, resulting in a finished product that is one continuous ribbon or length, to be measured and precisely cut to order. This method is ideal for making such useful products as weather stripping or door seals. Unlike a mold, the dies can be changed depending on product requirements.
That includes common U-shaped channels and other forms used heavily in the auto manufacturing industry. Extruded latex not only seals out moisture, but is used to dampen external noise, to help eliminate road vibration, and as decorative trim. Extrusion makes it possible for manufacturing companies to mass produce a consistent, identical products that people will benefit from nearly every day.
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